old transistors

Chuck Guzis cclist at sydex.com
Sat Jan 16 15:55:54 CST 2010


On 16 Jan 2010 at 11:05, David Griffith wrote:

> I stumbled across this page on old transistors from a hobbyist 
> perspective.  I thought some people might like it: 
> http://transistorhistory.50webs.com/.

Very nice, David.  Thank you!  

I remember experimenting with CK722, 2N107 and 2N170s many years ago.

I recall my family's first transistor radio--a 6-transistor 
Automatic.  Metal chassis construction with point-to-point wiring 
with each transistor in a socket.   Oddly, much larger than a 
Motorola Pixie tube radio.

Sitting on my kitchen counter for use as an emergency radio, I have 
an 60's era Sony 10 transistor AM-FM set.  Has worked every time I've 
turned it on. Takes 3 D-sized cells and is very sensitive.

I seem to recall that some early import manufacturers played the 
"watch jewel" game--added transistors to the unit without including 
them in any circuitry.  This allowed them to up the all-important 
"transistor count" prominently displayed on the unit.

So how many transistors does an iPod have?

Cheers,
Chuck




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